Tabulating attachment for type-writing machines.



F. P. GORIN. TABULATTNG ATTACHMENT TOR TYPE WRTTTNG MACHTTTES- .7W-W @www mi .www

F. Pl GORIN. TABULATJNG M'IACHMENT FOR TYPE WRmN G MACHINES.

APPLICATIN FILED JULY I8. 1911K .Patented Apr. 30, 1918.

. G SHEE1S-SHEET 2.

F. P. GORIN.

TABULATING ATTACHMENT FOR TYPE WRITTNG MACHINES.

APPLICATION FILED )UL'Y I8. 191.7.

Patened Apr. 30, 1918.

6 SHEETS-SHEET 3.

IT. P. GORIII. IABULATING ATTACHMENT FOR TYPE WRITING MACHINES.

APPLICATIN FILED IULYIB. 1911.

FIIzented Apr. 30, 1918.

'IIIQMIQQI SHEEISHSHEET IIm:

I N Il@ r?? N um man NIII F P. GORIN. I TABULATING ATTACHMENT FOR TYPE WRITING MACHINES.

APPLICATION FILED JULY I8| I9II. I

Patented Apr. 30, 1918.

6 SHEETS-#SHEET 5.

F, P. 60mm. TABULATTNG ATTACHMENT FOR'TYPE WRITTN APPLICATIGTI FILED JULY l8\ 1917. QQQ.,

c MACHINES.

Patented Apr. 30, T918.

FRED l. GORIN, OF SEATTLE, WASHINGTON.

TAB'ULATNG ATTCHMENT FOR TYP-WRITING MACHINES.

Specification of Letters Patent.

Patented irpr,a 3d, 1918,

Application filed July 18, 1917. Serial No. 181,451?.

To @ZZ whom t may concern:

Be it knownthat 1, FRED P. Gouin, a citizen of the United States of America, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Tabulating Attachments for Type-`Writing Machines, of which the following is a specification. p

This invention relates to improvements in tabulating attachments for typewriter ma chinos.

Heretofore it has been necessary to reconstruct the usual tabulating mechanism to such extent as to almost amount to a re organization of the machine, in order to effectively cushion the impact of the tabm lator stops, and provide safety devices to insure the reconnection of the typewriter letter feed at the predetti: mined writing point.

One'of the principal objects of this invention is to provide cushioning means and safety devices in the form of a compact unit readily and Iquickly detachable and attachable to any usual form of tabulating typewriter. without the necessity' of cutting, drilling, tapping or in any other manner' altering),l the tabulating mechanism, or interfering with its usual function; the attachment taking complete control of the carriage after the usual tabulating operation has been completed and all the tabulating mechanism, as well as the typewriter escapement, has been returned to normal relation; the attachment automatically maintaining complete control of the carriageuntil it settles aty the predetermined, writing point.

Another object of the invention is to render it unnecessary to employ such a relatively strong buffer as' has been common in the art heretofore, it being manifest that the weaker the buffer be, the shorter will be the time required for the carriage to recover from the vibration caused by the buffer, the lighter buffer also greatly reducing the shock and noise.

In lieu of having the moving parts act `on a buffer which must overcome the tent sion of the usual motor spring, 1 provide buffer period, so far as movement of the carriage is concerned.

1n carrying out my invention I employ the buffer principle for the carriage, when the usual stops collide, such for instance as'disclosed in the patents to Frantz No. 1124219, 1118388 and 1118339, buthave materially improved the construction and resultant function flowing therefrom.

A further object of the invention is to provide automatic means for effectually locking the parts at the time the carriage is compressing the buffer, and the consequent expansion of said buffer, and locking means to take care of the carriage after the con'il'nession and expansion of the buffer is completed, one locking means acting to control the carriage after it passes the writing point. when travelingin letter feed direction, and the other locking means acting to control the carriage after it passes the writing` point when traveling in contra letter feed direction.

A further object of the' invention is to provide automatic means for positively locking the. parts until the carriage returns to a predetermined position irrespective of whether or not the operator holds the tabu-4 latng` key depressed after the prcdeter mined writing point be reached the mechanism being so arranged that 'the carriage is permitted to vibrate within a letter space just prior to its finding its predetermined position, but even when this inovei'nent occurs the lock remains in locked out position.

The invention also aims to provide in a tabulating attachmentl for vtypewriters, means which does not require the locking out of the tabulator i'nechanism during the period of vibration of the carriage when the butiing action occurs,r as 1 have found it is onlyA necessary to lock the carriage tabulator stop against movement in either direc.

tion in excess of a letter space, with respect to the frame of the typewriter, thereby leaving the tabulator and the typewriter escape- -ment free at any time, after the impact, to return to normal position upon removal of the finger pressure from the tabulator key.

In the accompanying drawings:

Figure 1 `is a plan View of a typewriter illustrating the application of the improved tabulator attachment,

Fig. 2, is a rear elevation of the same,

ig. l3, is a side elevation, the parts being in the same position as and 2, l t

Fig. 4 is'an enlarged detail plan view of the tabulator attachment,

Fig. 5 is an venlarged retail rear View of same,

Fig. 6 is a detail vertical section taken on the line mm of Fig. 1,

Fig. 7 is a similar View, but illustrating the lock rod in rocked position to lock the parts to the frame of the typewriter, F ig. S is a similar section taken on the line y-y of Fig. 1, looking in the direction of the arrow,

Fig.V 9. is a detail rear perspective View of thelock rod, the stop-bar, and associated parts, I

Fig. l0 is a diagrammatic rear elevation of the attachment and the typewriter carriage, the parts being shown in normal position,

Fig. 11, is a similar view, the stops having collided and the carriage having moved by momentum to lock the lock rod and stop to the typewriter frame,

ig. 12 is a similar view, but showing the sleeve released, and the carriage at the end of its momentum movement,

Fig. 1 3, is a similar view showing the carriage against its fixed stop when rebounded by the/buffer.

In the accompanying drawings, the numeral 1 indicates conventionally a typewriter; 2 the carriage; 3 the usual escapement bar, and 4 the escapement.- The typewriter is provided with a tabulator. 5, of any preferred construction, operated by appropriate keys 7.

These parts are of usual construction and for the purpose of illustrating the application of my invention.

ExtendingA from thel rear and secured to the carriage 2, are brackets 8, and 9, which support the tabulator attachment, which pla/medilater ofl'the stop bar is makes it possible to stop the carriage at a predetermined writing point when using the Ordinary tabulator, Iherein vconventionally shown. Mounted .in'the brackets 8, and l9, is a stop bar 10, provided with a. plurality of teeth 11, the carriage having a limited moiement on the stop bar, as will be eX- ou. Depending from one end aprojection 12, to which tle outer end of the usual carriage motor sl'ing 13, of the typewriter is attached.l Xtendng from the front of the stop bar shown in Figs. 1

outer ends of the sleeve and includesl stops 6,

'A lug 26, the two site end being ported ou a pin which 10, is a pin 14, and attached thereto is a light spring 15, the opposite end being secured to the bracket 8. Carriage stops 1G, are transversely slidably mounted on the. stop. bar .10, and they are held in adjusted position by the teeth 11, these stops of course being located where it is desirable to slop the carriage at a predetermined writ,- ing point when tabulating.

Secured on the; stop bar l0, beyond the b acket 9, is a bracket 17, and at the opposite end of the bar 10, beyond the bracket 8, is a bracket 18.V In the brackets 17, and 18, are alined screws 19, having cone seats in which the cone shaped ends of a lock nodiQO, are mounted. Slidably mounted o'n the lock rod, adjacent the brackets 8, 1S, is a locking sleeve Q1, formed with a longitudinal slot 2?., provided with an enlargement 23, at its inner end. A pin or screw 2l, extends from the lock rod, and engages the enlargement of the slot, the screw insuring the rotation of the sleeve with therod. Between the andthe bracket 1S, is interposed a light spring 25, which normally tends to slide the sleeve toward the bracket 8, hence the inner end wall of the slot 22, into contact with the interlocking screw 24.

Projecting from the bracket 8, toward the lock rod is a lug 26, which is normally disposed to `lie against the inner edge of the sleeve 21, with its upper edge approxinmtely in the plane with the lower wall of the slot 22. The lug 2G, is clamped in adjusted position by a cap plate 26a, screwed to the upperend of the bracketI S. Extending from the lock rod is a projection 27, spaced from the inner edge of the sleeve 2l. to form a seat 2P. the width of the seat being equal to the width of the lug 2G, the latter, when the parts are in their normal positions heilig confined in the seat between the' projection and the outer end of the sleeve as shown best j n Fig. 10. The upper surface of the projection 27, is below the upper surface of the surfaces being normally spaced apart about one half the thickness` of the lug to form a stepped escapement in the operation of the tabulator attachment. To the opposite cured one end of a coil sprmg 28, its oppofastened to thc bracket t), and is tensioned to normally rotate the 'rod to bring the lug 2G, and thc projection 27, into the relation previously described. ing inwardly7 from the bracket i). is an cxteiision Q), the inner upper end ot' which is beveled to provide a cam 30. while the top portion forms a track ill. for a roller C-l 2,sup extends from the front of the lock rod. 'lhe roller normally engages the cam, as indicated in Fig. 10, the spring 28, acting to rotate the rod to effect this relation.

end of the lock rod 20, is sc- @n a rib 33, at the rear of the lock rod are Y formed teeth 34:, with which a tooth 35, fixed `A small spring 38, is confined between the head of the pin 37, and a screw 39 fitted in the outer end of thebushing, the spring normally projecting'the pin. This construction serves as afcushion as well as a means to returnthe carriage to the predetermined writing point when it is repelled beyond said point by the buffer spring.

The' inner end o the bushing 36, is so positionedthat when the spring pressed pin is driven in, by the bracket 9 the bushing forms a positive stop and limits the-movcment of the carriage.

lt is of course to be understood that in all tabulating typewriters the usual letterfeed is disconnected from the carriage by operating a tabulating key to bring the stops to impact position, and therefore there is usually a connection, such for instance as illustrated at 40, which is common to all the `taloulating'keys 7, so that upon the depression of any one of the keys, theescapement bar 3, will: be elevated to permit free movement of the carriage under the iniiuence of the motor spring. l

Projecting from the bracket 9, is a dash pot and plunger 412 the latter acting.- on the projection 12, when the carriage is repelled by the buffer spring, to reduce possible shock, should the carriage contact with the positive stop.

ln describing` the operation', reference is made particularly to Figs. 10 to 13, which, represent diametrically rearviews of the operating parts of the safety mechanisms, and for clearness the movements of the carriage will be referred to as right and left, viewing the machine from the rear.

When'it isdesired to tabulate, the desired carriage stop 16, on the stop-bar 10, is of course positioned to cooperate with the tabulatin'g stop, then the appropriate tabulating key 7 is depressed inA the usual manner, which, through the connections, projects one of the tabulating stops G, into the path of the carriage stop.

immediately the tabulator key 4is de pressed thevescapement bar 3 is disengaged from thev letter feed, and the carriage is free 'to move under the influence of th'e l motor spring 13, until the carriage stop 16,

collides with the tabulator stop 6, as shown in Fig. 10. When the impact occurs, the momentum of the shock slides the carriage on the stop rod, to vthe right of the predetermined letter point, as viewed from the rear of the machine, and notwithstanding the fact that the stop bar is mounted on the carriage, said bar will now be held rigid from the time of the impact, until the carriage is ultimately located at the predetermined Writing point. In the movement oithe carriage toward the right, after the stops collide, the lug 26, on the bracket-8, slides the sleeve 21, on the lock rod 20, the approximate distance of the enlarged portion 23,

.and against the tension of the spring 25,

as shown in Fig. 11. During the period the lug is laterally pressing on the sleeve, the

cam 30, is forced under the roller 32, which rocks the lock rod 20, and the sleeve, and the slot 22 is presented in registry Iwith the lug. When the cam rocks the lock rod, one of the spaces between two of the teeth 34, engages the tooth 35, and locks the lock rod 20 and the stop bar 10, to the frame of the machine, the roller 32, being now supported on the track 31, which acts to hold the parts iny `locked relation. Instantly the lug` 2G, is engaged in the slot, the spring 25, restores the sleeve to its normal position, although the carriage may still continue to move toward the right, as shown in Fig. 12; the

duration of this movement being dependent entirely upon the length of the run of the carriage and the momentum incident to the blow when the stops collide. From the time the stops collide to the end of its movement toward the right, the butter spring is ten sioned inasmuch as its forward end is fastened to the carriage, while its opposite end is fixed to the stop bar, which is now held stationary.

lt follows, friom the foregoing description, tha-t the s eeve and the buffer spring i act together to absorb the shock when the impact takes place, but imn'Iediatel-y after the cam tilts the lock rod, the bufting action 'of the sleeve ceases andthe carriage is thereafter cushioned by the buffer spring alone, and as the stop bar is now locked toy the frame the motor spring is prevented from perfornnng any function on the carriage proper.

The purpose of tilting the ,rod is to engage l the fixed tooth 35, between two teeth on the rib 33, to lock the parts in position pending the ultimate locating oi' the carriage at the predeterniined writing point. As the` lock rod is mounted on the lock bar, and as the latter is held stationary momentarily by the stops and subsequently tixedto the frame 'of the typewriter, said lock rod cannot now move with the carriage.

When the momentum of the c'arriagelo` ward the` right has been absorbedby the Y cushion, it is promptly repelled, and in its Vtermined Writing point is rebound movement in contra letter feed direction, it might be that the lug 26, Would .stop in its normal position and drop into the seat 2l formed between the end of the sleeve 21, and the projection 27, or the rebound movement Would besuch that said lug would pass the seat 21a, and it is at this point the danger of overriding the predelikely to occur, a condition with which this invention successfully copes.

When the carriage rebounds predetermined writing point in contra letter feed direction the lug` 2G will, under ordinary circumstances travel past the seat 2l, as shown in Fig. 13, and in the arcuate path of movement of the projection 27. As thc top surface of the projection 27 is below the bottom surface of the lug 26, it follows that: when the spring 28, rocks the lock rod in direction of its normal position, the projection 27, will have ample time to pass over the seat 21, without liability of striking' said lug. Instantly the lug;` 26, leaves the slot 22, the lock rod 20. commences to rock, but its movement is arrested by the collision of the beyond the projection 27 and the lug 2G, as shown in Fig. 13. Even though the lock rod is tilted, the fixed tooth 35, is still maintained in engagement with the lock bar and the parts are retained in this relation until the carriage, is finally stopped at the predetermined writing point. In the rebound movement of the carriage, alter the lug 27, passes from the slot 22, theI roller 32, leavesthe track 31, and is held suspended above the cam 30, and in position to be lowered in operative relation, as best shown in Fig. 13. 4This action is due to the lug 26, holding the projection 27, a condition which must be maintained until the carriage is finally stopped at the predetermined position. t

By this means the carriage, even though it has rel'iounded past the termined w ing' point in contra letter -feed direction, is s'till locked out of the infiuence of the motor spring, although the operator may have released the tabulator key and the tabulator stop may be retracted.

In the rebound movement, the extension. on the bracket 9, will engage the pin 37 and compress the spring 38, this movenaint being within. or less than a letter space` and then the bushing,- or fixed stop 3o is encountered,

whereupon movement of the carriage to the lett beyond the predetermined position ceases. as shown in Fig. 13. ln the rebound movement of the carriage to the left past the predetermined writing point, the function ot the butl'er spring` ceases, any undue shock when the fixed stop is encountered havingbeen absorbed by the dash pot. The rebound movement of the carriage havin r ceased, the spring`38 will act; to move the carriage to the proposed prederight, and promptly7 the lug 26 reaches the edge of the projection 27, and contacts with the edge of the sleeve 21, the lock rod 20, is `free to be rocked by its spring 28, to normal position, and frees the teeth 3% from the fixed tooth Once the lock rod is treel of the tooth, the parts assume lucir normal posi.- tions, and the carriage and the safety mechanism carried thereby arc within the control of the motor spring, but this cannot possibly occur after the impact. of the stops, until` the carriage is finally located at the prede- `termined point.

It must be bornel in mind that in the re-t bound movement of the carriage the plojection 27 passed .from the slot the lock rod and the sleeve rotated slightly, consequently the edge ot' the sleeve, was brought into the path ofthe lueA 2G, and the latter in its movement to the right by the spring 3S, cannot again enter the slot 22, thus the operator is assured of the carriage being stopped at the predetermined .writing point.

lt does not follow troni the above description, that every time a tabulating key is operated that the carriage will come against the positive stop. On the contrary this is an extreme movement. It is true however that whenever the run be suflicient to produce a rebound that will cause the lug 2G to overlie the projection 27, they action-ot the lock bar, with reference to the fixed tooth will be the same, and the parts will be locked absolutely until the carriage finds the predetermined point.

Now let it be assumed that the run of the carriage was short, the action ot the sleeve. the lug and the cam will be the same as heretofore described. but as the impact was lighter. the buffer will. not rebound the carriage to the same extent, therefore the lutv 2U, will be withdrawn `from the slot 22, and it may stop at the edge of the sleeve in registry with the seat 2l, formed between the sleeve 2l and the projection 27. Under such circumstances the spring 2S, will immediately rock the lock rod and release the teeth thereot' from the fixed tooth on the frame. ln this case there would be no rebound past the writing point, and consequently no operation of' that part of the lock to the lett ot' the writingr point. From this it will be seen that that portion ofthe lock which isjo the lett of the writingr point is brought iiito operation only when there is rebound on that .side of the writingiy point` and that this action is automatic. y

From the foregoing description it will be seen that the tabulator has not been locked out, nor has il been in any way affected by the mechanism for stoppiner the carriage at a predeternlined point` (hice the tabulator key has been depressed and the .stops have collided, the operator may or may not rc- Lacasse l move pressure on the tabulator key, as the parts are so arranged that while the butler action is going on the sleeve acts to lock the lock rod to the frame of the machine, while during the rebound periodpast the predetermined writing point the stepped escapement acts to hold the lock rod to the frame,

as described.

Because of thel parts acting so quickly it is a'physical impossibility for the operator to remove pressure on the tabulator key and for the typewriter escapement feed to return to` normal position between the time of the impact of the stops andthe time the carriage has reached the limit of its movement to the right against the action of the buffer. F or this reason it is notr necessary to provide means` for locking out the tabulator and the escapement feed of the typewriter 2e during the compression of the buffer, and it is of course not necessary to lock out the parts mentioned during the expansion period of the bufferl because the typewriter escapement feed at all times yields in that direction and allows the carriage to ride .freely to the right.

Particular emphasis is to be placed on the fact that the buffer is wholly independent of the motor s ring, and that the latter is' 3e attached direct y to the stop bar, which permits ofthe use of a much lighter spring or butter than heretofore employed, which re'- sults in less shock to the parts, and less noise. lty is of course understood that the motor lspring of the typewriter may be left attached to the carriage, in the usual manner, and my device will be equally eiiicient except for the greate'rvshock, resultant noise, and greater period of time necessary for 40 the carriage to subside from vibration.

l; The combination with a typewriter comprising a movable carriage, a motor spring and step by step spacing mechanism, of buffer mechanism for gradually stopping the carriage andreturning the same to a predetermined point, said mechanism including means for freeing the carriage from the influence of the motor spring,

and a locking 'out' device for maintaining the butler mechanism in operative position until such point is reached.

2. ln combination, a. typewriter comprising a movable carriage having a stop, a motorspriig therefor, and a step by step spacing mechanism, a tabalator including a stop, and buffer mechanism for gradually stopping the carriage at a predetermined point independently of the motor spring. so 3. ln combination, a typewriter comprising a movablecarriagehaving a stop, motor spring therefor and step by step spaeingv mechanism, a tabulator including a stop, and buffer mechanism weaker than the e5 motor spring for gradually stopping the carriage at ,a predetermined point independently of the motor spring.

4, The combination with a typewriter comprising a movable carriage, a motor spring and step by step spacing mechanism, buffer mechanism for gradually stopping the carriage and returning same without interference from the motor spring to a predetermined point, and a locking out device for maintaining the buffer mechanism in operative position until such point is reached, said locking ont device including a locking bar to which the motor spring is attached.

5, ln combination, a typewriter comprising a movable carriage having stop mechanism, a motor spring` acting directly on the carriage stop mechanism, step by step spacing mechanism, a tabula-tor including a stop, and buffer mechanism for gradually stopping the carriage at a predetermined point independently of the motor spring.

(3. ln a selective stop mechanism for type- -writer carriages, the combination with a frame, a carriage, a motor spring and spacing mechanism, of a stopping member, a buer device comprising a series of plungers, mechanism for actuating -said plungers to interpose the same in the path of movement of said stopping member, and a locking out device for maintaining a connection between the stopping member and the frame of the typewriter.

7. ln a 'tabulating attacln'nentfor typewriting machines, the combination with a buffer for the carriage to gradually stop the same in letter feed direction, of means for permitting of the escapement mechanism of the typewrite i assuming normal position when the carriage is moved in contraletter feed direction after a perdetermined point has been reached by the carriage in skipping in letter feed direction, and means for automati 'ally entirely restoring the letter feed by a step by step movement when the carriage finally stops at the predetermined point.

8. ln a typewritino machine, the combination with a moya-le carriage, of motor mechanism and step'by step spacing mechanism therefor, a' tabnlator stop, a tabulator 115 key for releasing the step byV step spacing mechanism and permitting the carriage lo be moved freely and automatically by said motor mechanism until said tabulating stop is engaged by said carriage and while said key remains depressed, a cushion to relieve the impact of the carriage after said tabulat- 'ing stop is engaged, means for automatically locking out the motor mechanism, said loci(- ing. means acting independently of the tabulator key after the impact, the step by step spacing mechanism being reconnected to feed in letter feed direction only after the carriage reaches a predeter'l'nined point.

9. The combination with a typewriting maduring the compression and expansion of said cushion, and means for thereafter automatically unlocking said locking device at lor about the time the carriage passes out of control of the tabulating mechanism.

10. The combination vwith machine, of tabulating mechanism comprising stops on the typewriter frame and the` carriage respectively which are adapted to coperate with each other to arrest the carriage, a cushion to relieve the impact of the carriage when said stops engage, and safety mechanism for taking the carriage4 out of the control of its escapenieiit and out of the control of the tabu'lator mechanism and locking it in such condition after the carriage has passed the point of impact and until it returns thereto, and means to permit restoration of the controlpof the carriage to the escapement feed when the carriage stops at said impact point upon its return thereto.

11. In a tabulating` typewriting machine, the combination of a tabulator including a key, a typewriter carriage, a butler therefor, and means for positively limiting the rebound of the carriage, said means including a stop fixed with respect to the typewriter frame and which continues in operative ielation with respect to the carriage after inger pressure hasbeen removed'from the tabulator key.

12. In a tabulating typewriter, the combination witha carriage buffer, and alock operating during the reboundaiid which is automaticallyY held in operative position whenever the carriage rebounds beyond the predetermined position.

13. In a tabulating typewriter, the combination of a carriage bu'er, and a lock limiting the rebound and which is automatically held in locked position whenever the carriage rebounds beyond the predetermined position and which automatically returns to normal. position only when such rebound has subsided.

14. In a tabulating typewriter, the combination of a tabulatiiig; mechanism, of a typewriter carriage and a buffer for the cai`-` riage, and a locky limiting the rebound and brought into-operation by the rebound of the'carriage. .e 15. In a tabulating typewriting machine, the combination with a movable carriage, of motor mechanism therefor, stop mechanism including stops,

ing the 'impact of the stops when the stop a typewriting vtion only so long a cushion for reliev-` mechanism is'operated, means for automatically locking out the motor mechanism when a predterinined point is reached and so maintaining saine until the carriage returns to said point, said means co-acting with the stop mechanism.

16. In a tabnlating typewriting machine, the combination with a movable carriage, of motor mechanism therefor, stop mechaiiisni including stops, a cushion for relieving the impact ot' the stops when the stop mechanism is operated, and means which comes into action when the carriage is `.stopped by said stop mechanism and continues until the carriage is returned by the cushion to the point of impact to automatically lock out thc motor mechanism.

.17. In a tabulating attachment for writers, the combination with a movable carriage, of tabulatiiig mechanism including stop apparatus, a cushion for relieving the" force of the impact of the carriage when the stop apparatus is operated, the tabulating mechanism causing the letter feed nieclvianism of the typewriter to be inoperative until after a predetermined stopping point is reached, the tabulating mechanism being meanwhile free to return to its normal position at any time after the impact of the carriage.

18. In a tabulating attachment for typewriters, tlie combination with a movable carriage, motor mechanism therefor, of tabulating mechanism including a key and stop apparatus. a cushion for relievinf.,r the force of the impact of the carriage when the stop apparatus is operated, the tabulat ing mechanism holding' the letter feed mechanisni'of the typewriter in inoperative posias finger pressure is maintained upon the tabnlator l' v, a locking` ont device to lock ont the motor mechanism and which operates only during' the repellent aetion' of the cushion and the resultant contiiiued rebound.

19. In a tabnlatoi' attachment for typewriting niachines,the combination of means for disconnectingthe feed mechanism of a typewriter and permitting the carriage to skip toward a predetermined point` of resilient buffer mechanism for stoppiircr the carriage and returning it to such predetermined point, means for automatically lock,- ing out the motor mechanism of the typewriter duriiig the `gradual stopping and return o't said carriage, and means permitting automatic restoration of the letter feed mechanism at such predetermined point.

Q0. In a tabulator attachnient for typetype- 'writing machines, the combination withI means for disconnecting the feed mechanism intima carriage and returning it tosuch predetermined point, means which causes the motor mechanism of the typewriter to become locked out Whenever the carriage is under control of the buffer mechanism.

2l. The combination With a typewriting machine, ,comprising escapement feed and a carriage, of tabulating mechanism comprising stops on the carriage and the typewriter frame respectively which collide with each other to arrest the carriage when the escape,- ment feed is released, motor mechanism controlling the stop on the carriage, a cushion to relieve the impact of the carriagevvhen the stops collide, and safety mechanism for locking the carriage out of the control of "Writer frame, means for releasing the escapement feed and causing thecarriage to skip in letter feed-direction until said stops collide, a cushion to relieve the impact of the carriage when `the stops collide, and safety mechanism for locking the carriage out of the control of the motor mechanism during the compression of said cushion.

23. ln a tabiilating attachment for typewriting machines, 'the combination with a ii'iovable carriage and motor mechanism therefor, of stop apparatus, a cushion for relieving the force of impact of the c arriage when the stop 'apparatus is operated, andy means for automatically locking out the n'iotor inerhanisni when ,a predetermined stopping point is reached.

Q4. lin a tabulating attachment for type- Writing ii'iacliines, the combination with a movable carriage, motor mechanism therefor, of stop apparatus, a cushion for relieving' the force of the impact of the carriage 'when the stop apparatus is operated, means for automatically locking out the motor mechanism of the typewriter and so maintaining the saine untii the carriage be returned to a predetermined point by said cushion.

25. in a typewriting machine, the combination of a typewriter carriage, motor mechanism therefor, means for reieasing the step by step feed of the typewriter, coperating stops on the typewriter frame and on the k,parriage respectively, one of which is adapted to be projected into the patl'i of the other to arrest the carriage, a cushion to relieve the force of the impact of the carriage when saidstops collide, a locking out device coperating with said stops, said locking out device including a stepped escapeinent'for,

gradually restoring the said step by step feed ata predetermined point, and'coniiections which operate to lock out. the motor -meclianism of the typewriter Whenever the tabulator carriage is arrested by said stops.

Qif In a typevvritiiig machine, the combination With a movable carriage, a motor spring, -of stop mechanism, step by `rstep spacing mechanism,'means for disconnecting the step by step mechanism to permit the carriage to skip and engage said stop mechanism, means for cushioning the impact of the carriage against said stop mechanism, means', for absorbing-,the recoil of "tliecar.

riage past the predetermined Writing point in contra-letter feed direction, and automatic vmechanism for locking the carriage out of control of its motor spring,F until said carriage comes to rest at the position designated by the stop mechanism. n

27. The combination of a typevvriting inachine comprising escapement vfeed and a carriage, of tabulating mechanism comprising stops on the carriage and typewriter frame respectively, which collide with each other# to arrest the carriage when the escapeinent feed is released, a cushion to relieve the impact ofthe carriage when the stops collide,4

safety mechanism -for locking the carriage out of the control of its escape'ment feed from the time of the collision of said stops, and While the carriage is movingI forward and returning 4until the carriage rests mo ica inentarily in a predetermined position, and

means for automatically'unlocking the safet mechanism and restoring the carriage to fu l control of its escapemcnt feed.

28. The combination With a typewritiiig machine, comprising,` a carriage, motor mechanism therefor, escapeinent feed inechanisim' tabulating mechanism comprising stops on the carriage and the typewriter frame-'respectively Which collide with each other to arrest the carriage when the escapement feed is released, a cushion to relieve the impact of the carriage when the stops' collide, safety mechanism for locking the carriage outof the control of the escapement feed after the time of the collision of'said stops aiidwliile the carriage is moving forward until the carriage rests inoniei'itarily in a predetermined position, including` connections which cause the motor mechanism of the typewriter to become inoperative at the time of the col.- lision of the stops.

29, ln a tabulating typewriter, the combination of tahiilgiting mechanism including a stop and a ta ulating lrey, a carriage, a stop on the carriage, motor mechanism for the carriage, escapement mechanism, a buffer lock-out mechanism which acts both sides. o

ist

a predetermined stopping point of the carriage, the typewriter' escapement being under the control of the tabulating key.

30. In a tabulating typewriter, the com bination of tabuiating mechanism including a stop and a tabulating key, a carriage, a stop 0n the carriage, motor mechanism for -the carriage, escapement mechanism,` a but'- fer, lock out mechan ism which acts both sides of-a predetermined point of a stopping point of the carriage, said lock out mechanism including means or Xing a part of the mechanism to the frame of the typewriter, the typewriter escapement being` under the control of the tabulating key.

31. In a tabulating typewriter, the combination of tabulating mechanism including a stop and a tabulating key, a carriage, a stop on theJ carriage, motor mechanism for the carriage, escapement mechanism, a buffer, and lock nut mechanism acting. both sides of a predetermined stopping point of the car riage including a stepped escapement, and means to lock a part of said mechanism to the typewriter frame, the typewriter escape" ment being under the controlof the tabulator key. i .y

32. In a tabulating typeivriter, the combination of a tabulator including a stop, a freely movable carriage including aistop, a buffer Mtor the carriage, a rebound lock which includes a iiXed elementen the frame, said lock being operated by limpact of the stops and remaining in locked relation with the frame until the carriage finally reaches a predetermined writing point after having passed said writing point by the rebound of the butter.

33. In a tabulating typewriter, the combination of a tabulator including a stop and a tabulating key, a carriage including` a stop, said carriage having free movement in both directions with reference to a predetermined point, means for cushioning the carriage when it moves in either direction beyond a predetermined point, a fixed stopifoi limiting the movement in letter feeddirection, and a lock out device which releases the carriage only when it finally reaches its predetermined writing position.

34. In a taiulating typewriter, the combination of a ta/mlator including a stop, a carriage having a stop, cushion means to absorb the shock when the stops collide, said cushion mear `z'icluding several elements cach varying'in resistance, and means cooperating with the' cushion means to cause the carriage to stop at a predetermined writing point. y"

In a tabulating typewriter, the combination of a tabulator including a stop, a carriage having a stop, a cushion to absorb the shock when the stops collide, a rebound lock brought into operation by the4 rebound of the carriage, a motor spring for operating the carriage, and means actuated by the lock t'or suspendingthe action of the motor spring from the time of the impact of the stops until the carriage finally reaches a predetermined writing point.

36. In a tabulating typewriter, the combination of a tabulator including a stop, a carriage including a stop, a buiier for the carriage, and a lock operating during the rebound including a stepped escapement and a positive stop, said lock being brought into operation by theaebound of the carriage.

37. In a tabulating typewriter, the combi.- nation of a tabulator including a stop, a earriage including a stop, a butter for the earriage, a lock including a part fixed to the frame of the typewriter and a part which y moves with the carriage, and a fixed stop to limit the movement of the carriage in letter feed direction, the lock being brought into operation by the impact of the stops and held in operative relation until the carriage finally reaches a predetermined position.

38. In a tabulating typewriter, the combination ot' tabulating mechanism including a stop and a tabulating key, a carriage, a stop onvthe carriage, motor mechanism for the carriage, escapeinent mechanism to lock out the motor mechanisnn; a buil'er, lock-out mechanism which acts both sides of a predetermined stopping' point of the carriage.

39. In a tabulating typewriter, the combination et' tabulating mechanism including a stop and a tabulating key, a carriage, a stop on the carriage, motor mechanism for the carriage, escapement mechanism to lock out the motor mech anisuia buiier, lock out mechanism which acts both sides of a predetermined stopping point of the carriage, said lock-out mechanism including meansfor Iixing a part of the mechanism to the frame of the typewriter.

at). In a tabulating typewriter, the combination of tabulating mechanism including a stop and a tabulating key, a carriage, a stop on the carriage, motor` mechanism for the' carriage, escapement mechanism, a buffer, and lock mit mechanism to lock out the motor mechanism acting both sides of a predetermined stopping point of the carriage including a stepped escapen'ient, and means to lock a part ot' said n'icchanism to the typewriter frame.

iil. A detachable tabulating attachment lor typewriters to permit free vibrating of a typewriter carriage in letter feed and contra letter feed directions past a predetermined writing point, comprising buffers to receive the shocks ot the carriage in both directions, and a locking device operating while the carriage is vibratingl both sides ot' the predetermimal writing point and which is only released and connected to move with the carriage when said carriage finally settles at said predetermined writing point.

i memos 42. In a tabulating `ty ewriter, the combi# nation of a tabulator inc? riage includig a Stop, a bu er for e cai'- riage, and a lock operating during the re- 5 bound including a positive stop, said lock bein g brought into operation by thorebound of the carriage.

Witnesses JOHN Imam, F. M. Mmmm Intestlmo-ny whreof 1I aix any-signature udin a stopla cairln the presence of two witnesses.

t .v l

' FRED P.'GoRiN. 

